Hair retainer



FIG. 1 is a top perspective view of a hair retainer showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevational view thereof, the right side being a mirror image; and,

FIG. 5 is a left end elevational view thereof, the right end being a mirror image. 

The ornamental design for a hair retainer, as shown and described. 